Inventor sheet metal reducing elbow

[tcsteid]

anyone know how to create a reducing elbow in sheet metal? I need a 12" diameter to turn 90 degrees into an offset 8" opening.

[CCarreiras]

HI!

It's impossible to achieve the flat pattern of the elbow because it will have plastic deformation.

Maybe its better to do this in several elements and put them in one assembly.

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[mrattray]

Multiple parts (assembly), use lofted flange.
Post your attempt here if you need more help.

[CCarreiras · Accepted solution]

Hi!

If you need i can give this parametric assembly.

You can fill the fields with your values and achieve a lot of different systems with the same assembly.

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[tcsteid]

I would very much appreciate the file.

Thanks,
Dave Steinhauer


David Steinhauer
Professor,
Certified AutoCAD Professional
Certified Autodesk Inventor Professional
Academic Advisor Naval Shipyard Apprentice Training Program


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[CCarreiras]

Hi!

Sent to your email.

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[tcsteid]

I have both Inventor Professional 2014 and 2015 loaded on my computer but I am not able to open the files. I get the message Error reading RSe stream. Any thoughts?

[CCarreiras]

Hi!

Version 2015

Unzip the file in one folder.

Close all Inventor.

Inside the unziped folder, double click the project file:"Tubo_Curva_HVAC.ipj"

This will open Inventor.

Open the assembly:"Tubo_Curva_HVAC.iam"

Open iLogic Browser

In tab Forms, click the form button

Choose your values and apply

Save the assembly (in tab Manage, hit rebuild before) and close assembly

Open Drawing... and that's it.

If you have more problems, tell me.

[dpottier]

Hi I could use that parametric assembly. I am having trouble with an 8 inch to 6 inch reduction elbow.

[CCarreiras]

HI!

And what's you question?

And whats your othetr parameters; diameter, curve radius, thickness... etc etc.

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[dpottier]

Hi Carlos

Gracias for the reply.

Material -
0.25 inch black steel
All faces to be welded
Upper elbow radius - 8 inch (203.2 mm)
Lower elbow radius - 6 inch (152.4 mm)

I am not sure of the elbows radius from the junction of the XY axis. Possibly 8 inch if the height of the 8 inch part of the elbow was 11 inches above the XY axis ((d=8 + r=3) = 11) or 12 inches (see below from commercial reduction elbow)

This 8 inch to 6 inch reduction elbow should be commercially available but I need to get the data into an Inventor file.

Commercial 8 X 6 Centre to end = 12

Being able to change the diameters, example 8 inch to 6 or 10 inch upper and 4 or 8 inch lower would be a bonus.

The other end of the 6" pipe meets with an 8 inch square, 3/8 inch, box tube at bottom angle of 20 degrees right side of vertical.

Another issue will be a flange that will go from the 8 inch square tube to the 6 inch diameter pipe. Butt welding the pipe into the box tube would work but the transition from square to round woud be better with a flange.

Best regards
David
Ulaan Baatar, Mongolia

[tcsteid]

I would be fine seeing an example using any sizes. I just want to learn how to create the elbow.

[dpottier]

Have a look at this video

[travis.turnbow25]

Carlos, Would you mind sharing Your parametric assembly with me? I'm drawing an 90 degree reducing elbow going from 15" Diameter down to 7". Getting a 2d profile didn't take long but I'm having issues creating a 3D model. Your help would be very appreciated! Thanks, Travis

[IgorMir]

Here it is. IV 2010 files.

Cheers,

Igor.

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@tcsteid wrote:

I would be fine seeing an example using any sizes. I just want to learn how to create the elbow.

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[travis.turnbow25]

Thanks so much Igor, this worked wonderfully!

[IgorMir]

You are welcome!

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@travis.turnbow25 wrote:
Thanks so much Igor, this worked wonderfully!

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[kajobus]

Good day

Will AutoDesk Inventor Sheet metal do a development like this ?

https://www.fastcam.com/fastshapes/layout-lobster-pattern-development-for-metal-fabrication.html

Reducing from inlet dia to outlet dia

Regards

[JDMather]

@kajobus 

Yes.

[kajobus]

Hi , I has a quick look at your CADWhisperer youtube channel , impressive !

Do you have a video of a "Inventor sheet metal reducing elbow" similar to :

https://www.fastcam.com/fastshapes/layout-lobster-pattern-development-for-metal-fabrication.html

Regards